How To Speak To A Creationist, If You Must!

All the answers you’ll ever need, brought to you by Scientific American:

1. Evolution is only a theory. It is not a fact or a scientific law.

According to the National Academy of Sciences (NAS), a scientific theory is “a well-substantiated explanation of some aspect of the natural world that can incorporate facts, laws, inferences, and tested hypotheses.” So when scientists talk about the theory of evolution–or the atomic theory or the theory of relativity, for that matter–they are not expressing reservations about its truth.

2. Natural selection is based on circular reasoning: the fittest are those who survive, and those who survive are deemed fittest.

“Survival of the fittest” is a conversational way to describe natural selection, but a more technical description speaks of differential rates of survival and reproduction. That is, rather than labeling species as more or less fit, one can describe how many offspring they are likely to leave under given circumstances.

3. Nobody has ever seen a new species evolve.
Speciation is probably fairly rare and in many cases might take centuries. Nevertheless, the scientific literature does contain reports of apparent speciation events in plants, insects and worms.

4. Increasingly, scientists doubt the truth of evolution.

No evidence suggests that evolution is losing adherents. Pick up any issue of a peer-reviewed biological journal, and you will find articles that support and extend evolutionary studies or that embrace evolution as a fundamental concept.

5. The disagreements among even evolutionary biologists show how little solid science supports evolution.

Evolutionary biologists passionately debate diverse topics: how speciation happens, the rates of evolutionary change, the ancestral relationships of birds and dinosaurs, whether Neandertals were a species apart from modern humans, and much more. These disputes are like those found in all other branches of science. Acceptance of evolution as a factual occurrence and a guiding principle is nonetheless universal in biology.

6. If humans descended from monkeys, why are there still monkeys?
This surprisingly common argument reflects several levels of ignorance about evolution. The first mistake is that evolution does not teach that humans descended from monkeys; it states that both have a common ancestor.

7. Evolution cannot explain how life first appeared on earth.
The origin of life remains very much a mystery, but biochemists have learned about how primitive nucleic acids, amino acids and other building blocks of life could have formed and organized themselves into self-replicating, self-sustaining units, laying the foundation for cellular biochemistry. Astrochemical analyses hint that quantities of these compounds might have originated in space and fallen to earth in comets, a scenario that may solve the problem of how those constituents arose under the conditions that prevailed when our planet was young.

8. Evolutionists cannot point to any transitional fossils–creatures that are half reptile and half bird, for instance.
Actually, paleontologists know of many detailed examples of fossils intermediate in form between various taxonomic groups. One of the most famous fossils of all time is Archaeopteryx, which combines feathers and skeletal structures peculiar to birds with features of dinosaurs.

9. The Second Law of Thermodynamics says that systems must become more disordered over time. Living cells therefore could not have evolved from inanimate chemicals, and multicellular life could not have evolved from protozoa.
This argument derives from a misunderstanding of the Second Law. If it were valid, mineral crystals and snowflakes would also be impossible, because they, too, are complex structures that form spontaneously from disordered parts.

10. Mutations are essential to evolution theory, but mutations can only eliminate traits. They cannot produce new features.
On the contrary, biology has catalogued many traits produced by point mutations (changes at precise positions in an organism’s DNA)–bacterial resistance to antibiotics, for example.

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15 Answers to Creationist Nonsense

Opponents of evolution want to make a place for creationism by tearing down real science, but their arguments don’t hold up